Judging Distances

Clouds are a fairly common occurrence. They are big and it is hard to judge their distance. But I have to wonder how far away some of them actually are. Or even how big they are.
You can’t really get a real-time view from space of a cloud, but would I be surprised at how far they are. Or would they be close. If I look south, am I seeing clouds that are hovering over Leduc? Or are they just over the Whitemud?
There is nothing to reference them by eyesight. (Same reason the moon looks smaller when it isn’t near the horizon.)
What I need to do is go into a tower on a cloudy day and look at the shadows of clouds on the ground.